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The effect of lignin as a natural adhesive on the physico-mechanical properties of Vitis vinifera fiberboards

Lignin was used as a natural adhesive to manufacture Vitis vinifera fiberboards. The fiberboards were produced at laboratory scale by adding powdered lignin to material that had previously been steam-exploded under optimized pretreatment and pressing conditions. The kraft lignin used was washed several times with an acidic solution to eliminate any contaminants and low molecular weight compounds. This research studied the effects of amounts of lignin ranging from 5% to 20% on the properties of Vitis vinifera fiberboards. The fiberboard properties evaluated were density, water resistance in terms of thickness swelling, water absorption, and the mechanical properties in terms of modulus of rupture, modulus of elasticity, and internal bond. Results showed that fiberboards made from Vitis vinifera without lignin addition had weaker mechanical properties. However, the fiberboards obtained using acid-washed kraft lignin as a natural adhesive had good mechanical and water resistance properties that fully satisfied the relevant standard specifications

© BioResources, 2011, vol. 6, núm. 3, p. 2851-2860

North Carolina State University

Autor: Mancera, Camilo
El Mansouri, Nour-Eddine
Vilaseca Morera, Fabiola
Ferrando, Francesc
Salvado, Joan
Data: 2011
Resum: Lignin was used as a natural adhesive to manufacture Vitis vinifera fiberboards. The fiberboards were produced at laboratory scale by adding powdered lignin to material that had previously been steam-exploded under optimized pretreatment and pressing conditions. The kraft lignin used was washed several times with an acidic solution to eliminate any contaminants and low molecular weight compounds. This research studied the effects of amounts of lignin ranging from 5% to 20% on the properties of Vitis vinifera fiberboards. The fiberboard properties evaluated were density, water resistance in terms of thickness swelling, water absorption, and the mechanical properties in terms of modulus of rupture, modulus of elasticity, and internal bond. Results showed that fiberboards made from Vitis vinifera without lignin addition had weaker mechanical properties. However, the fiberboards obtained using acid-washed kraft lignin as a natural adhesive had good mechanical and water resistance properties that fully satisfied the relevant standard specifications
Format: application/pdf
ISSN: 1930-2126
Accés al document: http://hdl.handle.net/10256/7629
Llenguatge: eng
Editor: North Carolina State University
Col·lecció: Articles publicats (D-EQATA)
És part de: © BioResources, 2011, vol. 6, núm. 3, p. 2851-2860
Drets: Tots els drets reservats
Matèria: Lignina
Lignin
Fibres de cel·lulosa
Cellulose fibers
Fibres vegetals -- Propietats mecàniques
Plant fibers -- Mechanical properties
Fibres de cel·lulosa
Títol: The effect of lignin as a natural adhesive on the physico-mechanical properties of Vitis vinifera fiberboards
Tipus: info:eu-repo/semantics/article
Repositori: DUGiDocs

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